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<a name="1" href="#1">1</a>   <em>/**<em>*</em></em>
<a name="2" href="#2">2</a>   <em> * $Id: ArrayOrderedMap.html 10 2008-10-01 10:56:15Z azeckoski $</em>
<a name="3" href="#3">3</a>   <em> * $URL: http://reflectutils.googlecode.com/svn/maven/site/xref/org/azeckoski/reflectutils/map/ArrayOrderedMap.html $</em>
<a name="4" href="#4">4</a>   <em> * ArrayOrderedMap.java - genericdao - May 5, 2008 2:16:35 PM - azeckoski</em>
<a name="5" href="#5">5</a>   <em> **************************************************************************</em>
<a name="6" href="#6">6</a>   <em> * Copyright (c) 2008 Aaron Zeckoski</em>
<a name="7" href="#7">7</a>   <em> * Licensed under the Apache License, Version 2</em>
<a name="8" href="#8">8</a>   <em> * </em>
<a name="9" href="#9">9</a>   <em> * A copy of the Apache License, Version 2 has been included in this </em>
<a name="10" href="#10">10</a>  <em> * distribution and is available at: <a href="http://www.apache.org/licenses/LICENSE-2.0.txt" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0.txt</a></em>
<a name="11" href="#11">11</a>  <em> *</em>
<a name="12" href="#12">12</a>  <em> * Aaron Zeckoski (azeckoski@gmail.com) (aaronz@vt.edu) (aaron@caret.cam.ac.uk)</em>
<a name="13" href="#13">13</a>  <em> */</em>
<a name="14" href="#14">14</a>  
<a name="15" href="#15">15</a>  <strong>package</strong> org.azeckoski.reflectutils.map;
<a name="16" href="#16">16</a>  
<a name="17" href="#17">17</a>  <strong>import</strong> java.util.AbstractCollection;
<a name="18" href="#18">18</a>  <strong>import</strong> java.util.AbstractSet;
<a name="19" href="#19">19</a>  <strong>import</strong> java.util.ArrayList;
<a name="20" href="#20">20</a>  <strong>import</strong> java.util.Collection;
<a name="21" href="#21">21</a>  <strong>import</strong> java.util.Enumeration;
<a name="22" href="#22">22</a>  <strong>import</strong> java.util.HashMap;
<a name="23" href="#23">23</a>  <strong>import</strong> java.util.Iterator;
<a name="24" href="#24">24</a>  <strong>import</strong> java.util.List;
<a name="25" href="#25">25</a>  <strong>import</strong> java.util.Map;
<a name="26" href="#26">26</a>  <strong>import</strong> java.util.NoSuchElementException;
<a name="27" href="#27">27</a>  <strong>import</strong> java.util.Set;
<a name="28" href="#28">28</a>  
<a name="29" href="#29">29</a>  <em>/**<em>*</em></em>
<a name="30" href="#30">30</a>  <em> * A map which keeps track of the order the entries are added </em>
<a name="31" href="#31">31</a>  <em> * and allows retrieval of entries in the order they were entered as well,</em>
<a name="32" href="#32">32</a>  <em> * this is NOT safe for multi-threaded access,</em>
<a name="33" href="#33">33</a>  <em> * this is backed by a {@link HashMap} and {@link ArrayList}</em>
<a name="34" href="#34">34</a>  <em> * </em>
<a name="35" href="#35">35</a>  <em> * @author Aaron Zeckoski (azeckoski @ gmail.com)</em>
<a name="36" href="#36">36</a>  <em> */</em>
<a name="37" href="#37">37</a>  <strong>public</strong> <strong>class</strong> ArrayOrderedMap&lt;K, V> <strong>extends</strong> HashMap&lt;K, V> implements OrderedMap&lt;K, V> {
<a name="38" href="#38">38</a>      <strong>public</strong> <strong>static</strong> <strong>final</strong> <strong>long</strong> serialVersionUID = 1l;
<a name="39" href="#39">39</a>  
<a name="40" href="#40">40</a>      <strong>private</strong> ArrayList&lt;K> list;
<a name="41" href="#41">41</a>  
<a name="42" href="#42">42</a>      <strong>public</strong> <a href="../../../../org/azeckoski/reflectutils/map/ArrayOrderedMap.html">ArrayOrderedMap</a>() {
<a name="43" href="#43">43</a>          <strong>this</strong>(10);
<a name="44" href="#44">44</a>      }
<a name="45" href="#45">45</a>  
<a name="46" href="#46">46</a>      <strong>public</strong> <a href="../../../../org/azeckoski/reflectutils/map/ArrayOrderedMap.html">ArrayOrderedMap</a>(<strong>int</strong> initialCapacity) {
<a name="47" href="#47">47</a>          <strong>super</strong>(initialCapacity);
<a name="48" href="#48">48</a>          list = <strong>new</strong> ArrayList&lt;K>(initialCapacity);
<a name="49" href="#49">49</a>      }
<a name="50" href="#50">50</a>  
<a name="51" href="#51">51</a>      <strong>public</strong> <a href="../../../../org/azeckoski/reflectutils/map/ArrayOrderedMap.html">ArrayOrderedMap</a>(Map&lt;K, V> map) {
<a name="52" href="#52">52</a>          <strong>this</strong>(map.size());
<a name="53" href="#53">53</a>          <strong>for</strong> (Entry&lt;K, V> entry : map.entrySet()) {
<a name="54" href="#54">54</a>              <strong>this</strong>.put(entry.getKey(), entry.getValue());
<a name="55" href="#55">55</a>          }
<a name="56" href="#56">56</a>      }
<a name="57" href="#57">57</a>  
<a name="58" href="#58">58</a>  
<a name="59" href="#59">59</a>      <strong>private</strong> String name = <span class="string">"entity"</span>;
<a name="60" href="#60">60</a>      <strong>public</strong> String getName() {
<a name="61" href="#61">61</a>          <strong>return</strong> name;
<a name="62" href="#62">62</a>      }
<a name="63" href="#63">63</a>      <em>/**<em>*</em></em>
<a name="64" href="#64">64</a>  <em>     * @param name the name to use when encoding this map of entities</em>
<a name="65" href="#65">65</a>  <em>     */</em>
<a name="66" href="#66">66</a>      <strong>public</strong> <strong>void</strong> setName(String name) {
<a name="67" href="#67">67</a>          <strong>this</strong>.name = name;
<a name="68" href="#68">68</a>      }
<a name="69" href="#69">69</a>  
<a name="70" href="#70">70</a>      <em>/**<em>*</em></em>
<a name="71" href="#71">71</a>  <em>     * @return a list of all the keys in this map in the order they were entered</em>
<a name="72" href="#72">72</a>  <em>     */</em>
<a name="73" href="#73">73</a>      <strong>public</strong> List&lt;K> getKeys() {
<a name="74" href="#74">74</a>          <strong>return</strong> <strong>new</strong> ArrayList&lt;K>(list);
<a name="75" href="#75">75</a>      }
<a name="76" href="#76">76</a>  
<a name="77" href="#77">77</a>      <em class="comment">/*<em class="comment"> (non-Javadoc)</em></em>
<a name="78" href="#78">78</a>  <em class="comment">     * @see org.azeckoski.reflectutils.map.OrderedMap#getValues()</em>
<a name="79" href="#79">79</a>  <em class="comment">     */</em>
<a name="80" href="#80">80</a>      <strong>public</strong> List&lt;V> getValues() {
<a name="81" href="#81">81</a>          <strong>return</strong> <strong>new</strong> ArrayList&lt;V>( values() );
<a name="82" href="#82">82</a>      }
<a name="83" href="#83">83</a>  
<a name="84" href="#84">84</a>      <em>/**<em>*</em></em>
<a name="85" href="#85">85</a>  <em>     * @return a list of all the entries in this map in the order they were created</em>
<a name="86" href="#86">86</a>  <em>     */</em>
<a name="87" href="#87">87</a>      <strong>public</strong> List&lt;Entry&lt;K, V>> getEntries() {
<a name="88" href="#88">88</a>          ArrayList&lt;Entry&lt;K, V>> entries = <strong>new</strong> ArrayList&lt;Entry&lt;K,V>>();
<a name="89" href="#89">89</a>          <strong>for</strong> (K key : list) {
<a name="90" href="#90">90</a>              Entry&lt;K, V> entry = <strong>new</strong> SimpleEntry&lt;K,V>(key, <strong>this</strong>.get(key));
<a name="91" href="#91">91</a>              entries.add(entry);
<a name="92" href="#92">92</a>          }
<a name="93" href="#93">93</a>          <strong>return</strong> entries;
<a name="94" href="#94">94</a>      }
<a name="95" href="#95">95</a>  
<a name="96" href="#96">96</a>      <em>/**<em>*</em></em>
<a name="97" href="#97">97</a>  <em>     * Get an entry based on the position it is in the map (based on the order entries were created)</em>
<a name="98" href="#98">98</a>  <em>     * @param position the position in the map (must be less that the size)</em>
<a name="99" href="#99">99</a>  <em>     * @return the entry at that position</em>
<a name="100" href="#100">100</a> <em>     * @throws IllegalArgumentException if the position is greater than the map size</em>
<a name="101" href="#101">101</a> <em>     */</em>
<a name="102" href="#102">102</a>     <strong>public</strong> Entry&lt;K, V> getEntry(<strong>int</strong> position) {
<a name="103" href="#103">103</a>         <strong>if</strong> (position >= list.size()) {
<a name="104" href="#104">104</a>             <strong>throw</strong> <strong>new</strong> IllegalArgumentException(<span class="string">"Value is too large for the map size: "</span> + list.size());
<a name="105" href="#105">105</a>         }
<a name="106" href="#106">106</a>         K key = list.get(position);
<a name="107" href="#107">107</a>         Entry&lt;K, V> entry = <strong>new</strong> SimpleEntry&lt;K,V>(key, <strong>this</strong>.get(key));
<a name="108" href="#108">108</a>         <strong>return</strong> entry;
<a name="109" href="#109">109</a>     }
<a name="110" href="#110">110</a> 
<a name="111" href="#111">111</a>     @Override
<a name="112" href="#112">112</a>     <strong>public</strong> V put(K key, V value) {
<a name="113" href="#113">113</a>         V v = <strong>super</strong>.put(key, value);
<a name="114" href="#114">114</a>         <strong>if</strong> (v != <strong>null</strong>) {
<a name="115" href="#115">115</a>             <em class="comment">// displaced</em>
<a name="116" href="#116">116</a>             list.remove(key);
<a name="117" href="#117">117</a>         }
<a name="118" href="#118">118</a>         list.add(key);
<a name="119" href="#119">119</a>         <strong>return</strong> v;
<a name="120" href="#120">120</a>     }
<a name="121" href="#121">121</a> 
<a name="122" href="#122">122</a>     @Override
<a name="123" href="#123">123</a>     <strong>public</strong> V remove(Object key) {
<a name="124" href="#124">124</a>         V v = <strong>super</strong>.remove(key);
<a name="125" href="#125">125</a>         <strong>if</strong> (v != <strong>null</strong>) {
<a name="126" href="#126">126</a>             list.remove(key);
<a name="127" href="#127">127</a>         }
<a name="128" href="#128">128</a>         <strong>return</strong> v;
<a name="129" href="#129">129</a>     }
<a name="130" href="#130">130</a> 
<a name="131" href="#131">131</a>     @Override
<a name="132" href="#132">132</a>     <strong>public</strong> <strong>void</strong> clear() {
<a name="133" href="#133">133</a>         <strong>super</strong>.clear();
<a name="134" href="#134">134</a>         list.clear();
<a name="135" href="#135">135</a>     }
<a name="136" href="#136">136</a> 
<a name="137" href="#137">137</a>     <strong>public</strong> Enumeration&lt;K> keys() {
<a name="138" href="#138">138</a>         <strong>return</strong> <strong>new</strong> KeyIterator();
<a name="139" href="#139">139</a>     }
<a name="140" href="#140">140</a> 
<a name="141" href="#141">141</a>     <strong>public</strong> Enumeration&lt;V> elements() {
<a name="142" href="#142">142</a>         <strong>return</strong> <strong>new</strong> ValueIterator();
<a name="143" href="#143">143</a>     }
<a name="144" href="#144">144</a> 
<a name="145" href="#145">145</a>     <strong>transient</strong> Set&lt;K> keySet;
<a name="146" href="#146">146</a>     <strong>transient</strong> Set&lt;Map.Entry&lt;K,V>> entrySet;
<a name="147" href="#147">147</a>     <strong>transient</strong> Collection&lt;V> values;
<a name="148" href="#148">148</a> 
<a name="149" href="#149">149</a>     @Override
<a name="150" href="#150">150</a>     <strong>public</strong> Set&lt;K> keySet() {
<a name="151" href="#151">151</a>         Set&lt;K> ks = keySet;
<a name="152" href="#152">152</a>         <strong>return</strong> (ks != <strong>null</strong>) ? ks : (keySet = <strong>new</strong> KeySet());
<a name="153" href="#153">153</a>     }
<a name="154" href="#154">154</a> 
<a name="155" href="#155">155</a>     @Override
<a name="156" href="#156">156</a>     <strong>public</strong> Collection&lt;V> values() {
<a name="157" href="#157">157</a>         Collection&lt;V> vs = values;
<a name="158" href="#158">158</a>         <strong>return</strong> (vs != <strong>null</strong>) ? vs : (values = <strong>new</strong> Values());
<a name="159" href="#159">159</a>     }
<a name="160" href="#160">160</a> 
<a name="161" href="#161">161</a>     @Override
<a name="162" href="#162">162</a>     @SuppressWarnings(<span class="string">"unchecked"</span>)
<a name="163" href="#163">163</a>     <strong>public</strong> Set&lt;Map.Entry&lt;K,V>> entrySet() {
<a name="164" href="#164">164</a>         Set&lt;Map.Entry&lt;K,V>> es = entrySet;
<a name="165" href="#165">165</a>         <strong>return</strong> (es != <strong>null</strong>) ? es : (entrySet = (Set&lt;Map.Entry&lt;K,V>>) (Set) <strong>new</strong> EntrySet());
<a name="166" href="#166">166</a>     }
<a name="167" href="#167">167</a> 
<a name="168" href="#168">168</a>     <em class="comment">// Iterator support</em>
<a name="169" href="#169">169</a> 
<a name="170" href="#170">170</a>     <strong>abstract</strong> <strong>class</strong> CoreIterator {
<a name="171" href="#171">171</a> 
<a name="172" href="#172">172</a>         <strong>int</strong> currentPos = -1;
<a name="173" href="#173">173</a>         Entry&lt;K, V> lastReturned = <strong>null</strong>;
<a name="174" href="#174">174</a>         <strong>private</strong> List&lt;Entry&lt;K, V>> entries = ArrayOrderedMap.<strong>this</strong>.getEntries();
<a name="175" href="#175">175</a> 
<a name="176" href="#176">176</a>         <strong>public</strong> <strong>boolean</strong> hasMore() {
<a name="177" href="#177">177</a>             <strong>if</strong> ((currentPos + 1) &lt; entries.size()) {
<a name="178" href="#178">178</a>                 <strong>return</strong> <strong>true</strong>;
<a name="179" href="#179">179</a>             }
<a name="180" href="#180">180</a>             <strong>return</strong> false;
<a name="181" href="#181">181</a>         }
<a name="182" href="#182">182</a> 
<a name="183" href="#183">183</a>         <strong>public</strong> Entry&lt;K, V> getNext() {
<a name="184" href="#184">184</a>             currentPos++;
<a name="185" href="#185">185</a>             <strong>try</strong> {
<a name="186" href="#186">186</a>                 lastReturned = entries.get(currentPos);
<a name="187" href="#187">187</a>             } <strong>catch</strong> (RuntimeException e) {
<a name="188" href="#188">188</a>                 <strong>throw</strong> <strong>new</strong> NoSuchElementException(<span class="string">"There are no more items available to get, the last one was reached"</span>);
<a name="189" href="#189">189</a>             }
<a name="190" href="#190">190</a>             <strong>return</strong> lastReturned;
<a name="191" href="#191">191</a>         }
<a name="192" href="#192">192</a> 
<a name="193" href="#193">193</a>         <strong>public</strong> <strong>void</strong> removeCurrent() {
<a name="194" href="#194">194</a>             <strong>if</strong> (currentPos &lt; 0) {
<a name="195" href="#195">195</a>                 <strong>throw</strong> <strong>new</strong> IllegalArgumentException(<span class="string">"Have not called next yet, cannot remove from this iterator"</span>);
<a name="196" href="#196">196</a>             }
<a name="197" href="#197">197</a>             entries.remove(currentPos);
<a name="198" href="#198">198</a>             ArrayOrderedMap.<strong>this</strong>.remove(lastReturned.getKey());
<a name="199" href="#199">199</a>         }
<a name="200" href="#200">200</a> 
<a name="201" href="#201">201</a>         <em class="comment">// shared methods</em>
<a name="202" href="#202">202</a>         <strong>public</strong> <strong>boolean</strong> hasNext() {          <strong>return</strong> hasMore(); }
<a name="203" href="#203">203</a>         <strong>public</strong> <strong>boolean</strong> hasMoreElements() {  <strong>return</strong> hasMore(); }
<a name="204" href="#204">204</a>         <strong>public</strong> <strong>void</strong> remove() {              removeCurrent(); }
<a name="205" href="#205">205</a> 
<a name="206" href="#206">206</a>     }
<a name="207" href="#207">207</a> 
<a name="208" href="#208">208</a>     <strong>final</strong> <strong>class</strong> KeyIterator <strong>extends</strong> CoreIterator implements Iterator&lt;K>, Enumeration&lt;K> {
<a name="209" href="#209">209</a>         <strong>public</strong> K next() {                   <strong>return</strong> <strong>super</strong>.getNext().getKey(); }
<a name="210" href="#210">210</a>         <strong>public</strong> K nextElement() {            <strong>return</strong> next(); }
<a name="211" href="#211">211</a>     }
<a name="212" href="#212">212</a> 
<a name="213" href="#213">213</a>     <strong>final</strong> <strong>class</strong> ValueIterator <strong>extends</strong> CoreIterator implements Iterator&lt;V>, Enumeration&lt;V> {
<a name="214" href="#214">214</a>         <strong>public</strong> V next() {                   <strong>return</strong> <strong>super</strong>.getNext().getValue(); }
<a name="215" href="#215">215</a>         <strong>public</strong> V nextElement() {            <strong>return</strong> next(); }
<a name="216" href="#216">216</a>     }
<a name="217" href="#217">217</a> 
<a name="218" href="#218">218</a>     <strong>final</strong> <strong>class</strong> EntryIterator <strong>extends</strong> CoreIterator implements Iterator&lt;Entry&lt;K,V>>, Enumeration&lt;Entry&lt;K,V>> {
<a name="219" href="#219">219</a>         <strong>public</strong> Entry&lt;K,V> next() {                   <strong>return</strong> <strong>super</strong>.getNext(); }
<a name="220" href="#220">220</a>         <strong>public</strong> Entry&lt;K,V> nextElement() {            <strong>return</strong> next(); }
<a name="221" href="#221">221</a>     }
<a name="222" href="#222">222</a> 
<a name="223" href="#223">223</a>     <em class="comment">// All below copied from CHM</em>
<a name="224" href="#224">224</a> 
<a name="225" href="#225">225</a>     <strong>final</strong> <strong>class</strong> KeySet <strong>extends</strong> AbstractSet&lt;K> {
<a name="226" href="#226">226</a>         <strong>public</strong> Iterator&lt;K> iterator() {
<a name="227" href="#227">227</a>             <strong>return</strong> <strong>new</strong> KeyIterator();
<a name="228" href="#228">228</a>         }
<a name="229" href="#229">229</a>         <strong>public</strong> <strong>int</strong> size() {
<a name="230" href="#230">230</a>             <strong>return</strong> ArrayOrderedMap.<strong>this</strong>.size();
<a name="231" href="#231">231</a>         }
<a name="232" href="#232">232</a>         <strong>public</strong> <strong>boolean</strong> contains(Object o) {
<a name="233" href="#233">233</a>             <strong>return</strong> ArrayOrderedMap.<strong>this</strong>.containsKey(o);
<a name="234" href="#234">234</a>         }
<a name="235" href="#235">235</a>         <strong>public</strong> <strong>boolean</strong> remove(Object o) {
<a name="236" href="#236">236</a>             <strong>return</strong> ArrayOrderedMap.<strong>this</strong>.remove(o) != <strong>null</strong>;
<a name="237" href="#237">237</a>         }
<a name="238" href="#238">238</a>         <strong>public</strong> <strong>void</strong> clear() {
<a name="239" href="#239">239</a>             ArrayOrderedMap.<strong>this</strong>.clear();
<a name="240" href="#240">240</a>         }
<a name="241" href="#241">241</a>         <strong>public</strong> Object[] toArray() {
<a name="242" href="#242">242</a>             Collection&lt;K> c = <strong>new</strong> ArrayList&lt;K>();
<a name="243" href="#243">243</a>             <strong>for</strong> (Iterator&lt;K> i = iterator(); i.hasNext(); )
<a name="244" href="#244">244</a>                 c.add(i.next());
<a name="245" href="#245">245</a>             <strong>return</strong> c.toArray();
<a name="246" href="#246">246</a>         }
<a name="247" href="#247">247</a>         <strong>public</strong> &lt;T> T[] toArray(T[] a) {
<a name="248" href="#248">248</a>             Collection&lt;K> c = <strong>new</strong> ArrayList&lt;K>();
<a name="249" href="#249">249</a>             <strong>for</strong> (Iterator&lt;K> i = iterator(); i.hasNext(); )
<a name="250" href="#250">250</a>                 c.add(i.next());
<a name="251" href="#251">251</a>             <strong>return</strong> c.toArray(a);
<a name="252" href="#252">252</a>         }
<a name="253" href="#253">253</a>     }
<a name="254" href="#254">254</a> 
<a name="255" href="#255">255</a>     <strong>final</strong> <strong>class</strong> Values <strong>extends</strong> AbstractCollection&lt;V> {
<a name="256" href="#256">256</a>         <strong>public</strong> Iterator&lt;V> iterator() {
<a name="257" href="#257">257</a>             <strong>return</strong> <strong>new</strong> ValueIterator();
<a name="258" href="#258">258</a>         }
<a name="259" href="#259">259</a>         <strong>public</strong> <strong>int</strong> size() {
<a name="260" href="#260">260</a>             <strong>return</strong> ArrayOrderedMap.<strong>this</strong>.size();
<a name="261" href="#261">261</a>         }
<a name="262" href="#262">262</a>         <strong>public</strong> <strong>boolean</strong> contains(Object o) {
<a name="263" href="#263">263</a>             <strong>return</strong> ArrayOrderedMap.<strong>this</strong>.containsValue(o);
<a name="264" href="#264">264</a>         }
<a name="265" href="#265">265</a>         <strong>public</strong> <strong>void</strong> clear() {
<a name="266" href="#266">266</a>             ArrayOrderedMap.<strong>this</strong>.clear();
<a name="267" href="#267">267</a>         }
<a name="268" href="#268">268</a>         <strong>public</strong> Object[] toArray() {
<a name="269" href="#269">269</a>             Collection&lt;V> c = <strong>new</strong> ArrayList&lt;V>();
<a name="270" href="#270">270</a>             <strong>for</strong> (Iterator&lt;V> i = iterator(); i.hasNext(); )
<a name="271" href="#271">271</a>                 c.add(i.next());
<a name="272" href="#272">272</a>             <strong>return</strong> c.toArray();
<a name="273" href="#273">273</a>         }
<a name="274" href="#274">274</a>         <strong>public</strong> &lt;T> T[] toArray(T[] a) {
<a name="275" href="#275">275</a>             Collection&lt;V> c = <strong>new</strong> ArrayList&lt;V>();
<a name="276" href="#276">276</a>             <strong>for</strong> (Iterator&lt;V> i = iterator(); i.hasNext(); )
<a name="277" href="#277">277</a>                 c.add(i.next());
<a name="278" href="#278">278</a>             <strong>return</strong> c.toArray(a);
<a name="279" href="#279">279</a>         }
<a name="280" href="#280">280</a>     }
<a name="281" href="#281">281</a> 
<a name="282" href="#282">282</a>     @SuppressWarnings(<span class="string">"unchecked"</span>)
<a name="283" href="#283">283</a>     <strong>final</strong> <strong>class</strong> EntrySet <strong>extends</strong> AbstractSet&lt;Map.Entry&lt;K,V>> {
<a name="284" href="#284">284</a>         <strong>public</strong> Iterator&lt;Map.Entry&lt;K,V>> iterator() {
<a name="285" href="#285">285</a>             <strong>return</strong> <strong>new</strong> EntryIterator();
<a name="286" href="#286">286</a>         }
<a name="287" href="#287">287</a>         <strong>public</strong> <strong>boolean</strong> contains(Object o) {
<a name="288" href="#288">288</a>             <strong>if</strong> (!(o instanceof Map.Entry))
<a name="289" href="#289">289</a>                 <strong>return</strong> false;
<a name="290" href="#290">290</a>             Map.Entry&lt;K,V> e = (Map.Entry&lt;K,V>)o;
<a name="291" href="#291">291</a>             V v = ArrayOrderedMap.<strong>this</strong>.get(e.getKey());
<a name="292" href="#292">292</a>             <strong>return</strong> v != <strong>null</strong> &amp;&amp; v.equals(e.getValue());
<a name="293" href="#293">293</a>         }
<a name="294" href="#294">294</a>         <strong>public</strong> <strong>boolean</strong> remove(Object o) {
<a name="295" href="#295">295</a>             <strong>if</strong> (!(o instanceof Map.Entry))
<a name="296" href="#296">296</a>                 <strong>return</strong> false;
<a name="297" href="#297">297</a>             Map.Entry&lt;K,V> e = (Map.Entry&lt;K,V>)o;
<a name="298" href="#298">298</a>             <strong>return</strong> ArrayOrderedMap.<strong>this</strong>.remove(e.getKey()) != <strong>null</strong>;
<a name="299" href="#299">299</a>         }
<a name="300" href="#300">300</a>         <strong>public</strong> <strong>int</strong> size() {
<a name="301" href="#301">301</a>             <strong>return</strong> ArrayOrderedMap.<strong>this</strong>.size();
<a name="302" href="#302">302</a>         }
<a name="303" href="#303">303</a>         <strong>public</strong> <strong>void</strong> clear() {
<a name="304" href="#304">304</a>             ArrayOrderedMap.<strong>this</strong>.clear();
<a name="305" href="#305">305</a>         }
<a name="306" href="#306">306</a>         <strong>public</strong> Object[] toArray() {
<a name="307" href="#307">307</a>             <em class="comment">// Since we don't ordinarily have distinct Entry objects, we</em>
<a name="308" href="#308">308</a>             <em class="comment">// must pack elements using exportable SimpleEntry</em>
<a name="309" href="#309">309</a>             Collection&lt;Map.Entry&lt;K,V>> c = <strong>new</strong> ArrayList&lt;Map.Entry&lt;K,V>>(size());
<a name="310" href="#310">310</a>             <strong>for</strong> (Iterator&lt;Map.Entry&lt;K,V>> i = iterator(); i.hasNext(); )
<a name="311" href="#311">311</a>                 c.add(<strong>new</strong> SimpleEntry&lt;K,V>(i.next()));
<a name="312" href="#312">312</a>             <strong>return</strong> c.toArray();
<a name="313" href="#313">313</a>         }
<a name="314" href="#314">314</a>         <strong>public</strong> &lt;T> T[] toArray(T[] a) {
<a name="315" href="#315">315</a>             Collection&lt;Map.Entry&lt;K,V>> c = <strong>new</strong> ArrayList&lt;Map.Entry&lt;K,V>>(size());
<a name="316" href="#316">316</a>             <strong>for</strong> (Iterator&lt;Map.Entry&lt;K,V>> i = iterator(); i.hasNext(); )
<a name="317" href="#317">317</a>                 c.add(<strong>new</strong> SimpleEntry&lt;K,V>(i.next()));
<a name="318" href="#318">318</a>             <strong>return</strong> c.toArray(a);
<a name="319" href="#319">319</a>         }
<a name="320" href="#320">320</a> 
<a name="321" href="#321">321</a>     }
<a name="322" href="#322">322</a> 
<a name="323" href="#323">323</a> 
<a name="324" href="#324">324</a>     <em>/**<em>*</em></em>
<a name="325" href="#325">325</a> <em>     * This duplicates java.util.AbstractMap.SimpleEntry until this class</em>
<a name="326" href="#326">326</a> <em>     * is made accessible.</em>
<a name="327" href="#327">327</a> <em>     */</em>
<a name="328" href="#328">328</a>     <strong>static</strong> <strong>final</strong> <strong>class</strong> SimpleEntry&lt;K,V> implements Entry&lt;K,V> {
<a name="329" href="#329">329</a>         K key;
<a name="330" href="#330">330</a>         V value;
<a name="331" href="#331">331</a> 
<a name="332" href="#332">332</a>         <strong>public</strong> SimpleEntry(K key, V value) {
<a name="333" href="#333">333</a>             <strong>this</strong>.key   = key;
<a name="334" href="#334">334</a>             <strong>this</strong>.value = value;
<a name="335" href="#335">335</a>         }
<a name="336" href="#336">336</a> 
<a name="337" href="#337">337</a>         <strong>public</strong> SimpleEntry(Entry&lt;K,V> e) {
<a name="338" href="#338">338</a>             <strong>this</strong>.key   = e.getKey();
<a name="339" href="#339">339</a>             <strong>this</strong>.value = e.getValue();
<a name="340" href="#340">340</a>         }
<a name="341" href="#341">341</a> 
<a name="342" href="#342">342</a>         <strong>public</strong> K getKey() {
<a name="343" href="#343">343</a>             <strong>return</strong> key;
<a name="344" href="#344">344</a>         }
<a name="345" href="#345">345</a> 
<a name="346" href="#346">346</a>         <strong>public</strong> V getValue() {
<a name="347" href="#347">347</a>             <strong>return</strong> value;
<a name="348" href="#348">348</a>         }
<a name="349" href="#349">349</a> 
<a name="350" href="#350">350</a>         <strong>public</strong> V setValue(V value) {
<a name="351" href="#351">351</a>             V oldValue = <strong>this</strong>.value;
<a name="352" href="#352">352</a>             <strong>this</strong>.value = value;
<a name="353" href="#353">353</a>             <strong>return</strong> oldValue;
<a name="354" href="#354">354</a>         }
<a name="355" href="#355">355</a> 
<a name="356" href="#356">356</a>         @SuppressWarnings(<span class="string">"unchecked"</span>)
<a name="357" href="#357">357</a>         <strong>public</strong> <strong>boolean</strong> equals(Object o) {
<a name="358" href="#358">358</a>             <strong>if</strong> (!(o instanceof Map.Entry))
<a name="359" href="#359">359</a>                 <strong>return</strong> false;
<a name="360" href="#360">360</a>             Map.Entry e = (Map.Entry)o;
<a name="361" href="#361">361</a>             <strong>return</strong> eq(key, e.getKey()) &amp;&amp; eq(value, e.getValue());
<a name="362" href="#362">362</a>         }
<a name="363" href="#363">363</a> 
<a name="364" href="#364">364</a>         <strong>public</strong> <strong>int</strong> hashCode() {
<a name="365" href="#365">365</a>             <strong>return</strong> ((key   == <strong>null</strong>)   ? 0 :   key.hashCode()) ^
<a name="366" href="#366">366</a>             ((value == <strong>null</strong>)   ? 0 : value.hashCode());
<a name="367" href="#367">367</a>         }
<a name="368" href="#368">368</a> 
<a name="369" href="#369">369</a>         <strong>public</strong> String toString() {
<a name="370" href="#370">370</a>             <strong>return</strong> key + <span class="string">"="</span> + value;
<a name="371" href="#371">371</a>         }
<a name="372" href="#372">372</a> 
<a name="373" href="#373">373</a>         <strong>static</strong> <strong>boolean</strong> eq(Object o1, Object o2) {
<a name="374" href="#374">374</a>             <strong>return</strong> (o1 == <strong>null</strong> ? o2 == <strong>null</strong> : o1.equals(o2));
<a name="375" href="#375">375</a>         }
<a name="376" href="#376">376</a>     }
<a name="377" href="#377">377</a> 
<a name="378" href="#378">378</a> }
</pre>
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